Comtrol AT Commands - Manual (Page 89)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
102184B Conexant 3-63
3.2.5 Error Control Commands
+ES - Error Control and Synchronous Mode Selection
This extended-format command specifies the initial requested mode of operation when
the modem is operating as the originator, optionally specifies the acceptable fallback
mode of operation when the modem is operating as the originator, and optionally
specifies the acceptable fallback mode of operation when the modem is operating as the
answerer. It accepts three numeric subparameters:
Syntax
+ES=[<orig_rqst>[,<orig_fbk>[,<ans_fbk>]]]
Defined Values
<orig_rqst> Decimal number which specifies the initial requested mode of
operation when the modem is operating as the originator. The
options are:
0 Initiate call with Direct Mode.
1 Initiate call with Normal Mode (also referred to
as Buffered Mode) only.
2 Initiate V.42 without Detection Phase. If V.8 is
in use, disable V.42 Detection Phase.
3 Initiate V.42 with Detection Phase. (Default.)
4 Initiate MNP.
6 Initiate V.80 Synchronous Access Mode when
connection is completed, and Data State is
entered. (See +ESA and +ITF commands.)
7 Initiate Frame Tunneling Mode when connection
is complete, and Data Mode is entered.
<orig_fbk> Decimal number which specifies the acceptable fallback mode
of operation when the modem is operating as the originator.
0 LAPM, MNP, or Normal Mode error control
optional. (Default.)
1 LAPM, MNP, or Direct Mode error control
optional.
2 LAPM or MNP error control required;
disconnect if error control is not established.
3 LAPM error control required; disconnect if error
control is not established.
4 MNP error control required; disconnect if error
control is not established.